John, I couldn't disagree more about having a reason to run the latest USBasp firmware.
i know you have more experience playing with the firmware but we will have to agree to disagree this. ive had a few hundred of the Ebay units pass through here for academic and business use and never saw a single case where virgin 8mhz chips needed jumper or -b. i don't know how to explain our differences but can only relate my own experience.
Virgin 8mhz chips?
Some USBasp devices are shipped with modified USBasp firmware
But like I said the best option is to have USBasp firmware that supports setting the clock speed so you can run slow when you have to and fast/faster when you can.
John jumped in and is trying to convince you it is a waste of time. He is incorrect